摘要
本研究的目的为利用生态系统服务价值指标量化土地利用结构变化的生态效益,以此判断研究区当前的土地利用模式是否可持续。研究方法为生态系统服务功能的经济价值评估、环境经济学方法、灰色预测模型。研究结果显示,1996～2004年间,由于土地利用结构的变化,内江市的生态系统服务价值共损失4335.26万元;同时,在假设内江市保持现状土地利用方式、资源消耗和污染排放水平不变的情况下,预计到2010年,内江市的生态系统服务价值将比2004年再减少96829.18万元。研究结论:内江市生态系统服务价值的衰减主要由人工生态系统的扩张引起,因此编订科学的土地利用规划、优化土地利用结构已是当务之急。
The purpose of the study is to quantify the ecological benefit of land-use change by ecosystem service value and decide whether the current land use mode is sustainable. Such methods were applied as ecosystem service theory, environmental economics, grey systemic dynamic model. The result revealed that the total ecosystem services value decreased 43.3× 10^8 Yuan from 1996 to 2004. And it will decrease 968.29× 10^8 Yuan in case of keeping current land use mode, resource consuming and pollution emission level from 2004 to 2010. We can found that the decreasing of ecosystem service value was caused by expansion of artificial ecosystem. So it is high time to enact scientific land-use planning and optimize land-use structure.
出处
《生态经济》
CSSCI
北大核心
2008年第10期45-48,70,共5页
Ecological Economy
